Revolving door



Aug. il, i936. E. PEREMI ET AL *2,05L07 REVOLVING DOOR Filed April 20, 1935 3 Sheets-Sheet 1 IN V E N TO R S. fana/v0 fof/95H1 QY Owl/M55 A755 ATTORNEYS.

Aug. 11, w36.

E. PEREMI Erm. 2,051,007

REvoLvING DooR y v Filed April 2o, 1935 N oo N X ATTORNEYS.

3 Sheets-Sheet 3 REVOLVING DOOR E. FEREMI ET AL Filed April 20, 1935 Aug. 11, 1936.

. o e5 9 47 49 63 45 6' v INVENTORS. fava/m ,I2-,Paw BY CPM/w55 /sf/ ATTORNEYS.

Patented ug. l, 1936 Y UNHTED STES REVOLVING DOCE ration of New York Application April 20, 1935, Serial No. 17,378

I Claiins. (Ci. 20-18) ".l'his` invention relates to revolving doors and more particularly to revolving doors of the socalled panic-proof type.

In panic-proof doors the leaves are normally 51 held radially disposed, butare adapted to yield under a predetermined pressure to a collapsed condition when panickypersons rush heedlessly against the door leaves. 'I'he leaves are also Y adapted tobe collapsed when it is desired to clear the doorway for permitting merchandise to be carried intoor out of the building. For the latter purposek provision is made to relieve or relax the force normally tending to hold the leavesin radial position so that they may be collapsed l5 without undue exertion. Y

One feature of the'present invention has to do with detent mechanism for the above-indicated purpose, and as tothis feature the invention is in the nature of an improvement upon the invention disclosed and claimed in United States Letters Patent- No. 1,983,395, granted to Edmund Peremi and Charles Kish on December 4, 1934.

In' accordance with this feature provision is madel of means for applying spring pressure to the detent mechanism and of a key operated de vice for' shifting said pressure applying means between fully effective and relaxed positions, it being' a point of the present invention that the key operated device is locked or latched in position to maintain the maximum pressure, so that there is no liability of less than the maximum pressure being normally applied through accidental or careless setting of the pressure applying means.

In accordance with a further feature provision is made of simplified means for changing the normal adjustment of the device tosecure a selected normal or maximum pressure.

A further feature of the invention has to do with releasable chain mechanism for normally connecting the leaves to one another. Either the chainmechanism may be used or the detent mechanism may be used to the exclusion of the other, but they are desirably used jointly as illustrated herein.

It is aY feature of the invention that one end of a. chain is yieldingly retained between a rocker and a manually operable trigger or latch, the trigger being adapted to be operated manually to'release the chain by the exertion of a slight force, andthe rocker being adapted to yield to release the chain in response to separating force exerted! upon adjacent leaves. The rocker opposes substantial resistance toI the release of the chain: and may beV employed to supplement the 5'5" force.- exerted by the detent.

It is a feature that therocker isheld in normal position by spring pressure and that provision is made of means.y for adjusting the spring pressure actingvto retain the rocker in normal position at will. 5k

A further feature of the invention has to do with the provision ofa chain terminal block located within a leaf and normally locked in fixed position, together with adjustable means operable from the exterior of a leaf forreleasing, read- 10 justing and relooking the lock. Other objects and advantages will hereinafter appear.

t In the drawings forming part ofv this specificaion, i

Figure 1 is a sectional plan View illustrating a 15 revolving door embodying features of the present invention;v Y e Figure 2 is a view in sectional elevation of thc door of- Fig. 1; i

.Figure 3 is a fragmentary, sectional, horizontal 20 view showing the door leaves and the mounting thereof upon the central shaft or spindle;

Figure 4 is a fragmentary, vertical, sectional View illustrating the detent mechanism and parts associated therewith; 25

Figure 5 is a fragmentary, sectional bottom plan view illustrating the detent mechanism and. associated parts;

Figure 6 is a fragmentary view in elevation i1- lustratmg the exterior of the device for changinaT 30 the pressure upon the detent.V .J

Figure 'l is a sectional detail view taken on the line J-'l of Fig. 4 looking'in the direction of the arrows; Figure 8 is a fragmentary sectional view in ele- 35 vation taken upon the line `8 of Fig. 9 looking in the direction of the arrows;

Figure 9 is a fragmentary view in elevation illustrating features of the chain connecting mechanism; 40

Figure l0 is a fragmentary, horizontal, sectional view taken upon the line Ill-IE) of Fig. 9 looking in the direction of the arrows; and

Figure 11 is a fragmentary horizontal, sectional View taken upon the line" i'i-H of Fig. 9 looking 45 in the direction of the arrows.

The door i comprises a series of Y,leaves 2 which are mounted upon a rotary central support 3 to turn within a doorway having arcuate walls 4. The central rotary support includes a ver.- 50 tical shaft 5 which extends through the ceiling of the doorway and is revolubly suspended from a trolley (not shown); This trolley is movable upon a track (notshown) to move the folded leaves to one side of the doorway when the leaves have been collapsed. The vertical shaft 5 has fixed upon it a pair of discs 6, one located near the lower end of the shaft, and the other near the upper end thereof. Each of the discs is formed to interact with cooperating elements on the leaves for supporting the leaves, for normally retaining the leaves in radial position, and for guiding the folding movements thereof. The leaf carried members are mounted in a hanger 'I which comprises complementary housing plate 8 and 9.

The details of the discs 6 and the members co-acting therewith for controlling the paths of the leaves in collapsing is the same as that disclosed in the Patent No. 1,983,395, referred to above, and will not be described in detail.

The detent mechanism employed in each leaf for coacting with the disc may be the same in its interaction with the disc as the corresponding mechanism disclosed in said patent.

Each detent comprises -angularly related arms I0 and II which are pivoted at their outer ends upon a slide I2. A light spring I3 is mounted in a slot I4 of the slide I2 and bears against a fixed lug I5 for thrusting the slide I2 toward the disc 6. The arms I0 and II normally engage in notches I 6 and I'I of the disc to hold the leaf in radial position. The pressure exerted by the spring I3 is very. light, however, and its force is supplemented by the force of a spring I8 applied through a lever I9 pivoted on a shaft 20.

The spring I8 is mounted in a bore 2l formed in a rack 22, and is provided with a cap 23 slidablein the bore 2|; The cap 23 bears against the upper side ofthe lever I 9 and normally holds the outer end of said lever down against a fixed aboutment 24. The rack is operable to move the spring I8 toward and away from the fulcrum of the' lever I9 and hence to diminish and increase the force with which the lever acts to thrust the slide I2 toward the disc 6. When the spring I8 is directly over the axis of shaft 2U the spring I8 becomes wholly ineffective and the slide is thrust inward solely by the light force of the spring I3. The doorleaf may then be readily collapsed.- When it is desired to again lock the leaf in normal position it is first swung to normal position to 1re-engage the detent arms I0 and Il with the notches I6 and I'I. 'Ihe rack is then operated to move the spring I8 outward to its original position which may be the position illustrated in Fig. 4.

The rack is driven by a pinion 24 which has a hub portion 25 provided with a key socket 26. The key socket 26 is accessible from the exterior of the door so thatvan authorized person may operate the pinion merely by inserting a key and performing the required manipulation. The pinion at the side opposite the hub 25 has a bearing pin 21 received in a bore 28 of the plate 8. A metallic bow spring 29 is interposed between the pinion and the plate 9. The bearing pin 21 is made short enoughto have substantial endwise play in the bore 28 so that the pinion can be thrust axially by the operator against the force of the sp'ring'29.

The hub portion 25 is journaled in an annular flange 39 formed on a plate 3|, and the plate 3| is secured to the plate 9 by screws 32.- The flange 3U is provided with a stop shoulder 33 for limiting the operation of the pinion in the direction to move the spring I8 outward, the stop shoulder being electivedefinitely to control and determine the maximum force which the spring I8 can apply to the slide I2. This is the normal force resisting collapsing, and it is desirable that it be secured in every instance and that it be maintained at all times, except when an authorized person uses the key with the intention of collapsing the leaves.

The flange 30 is therefore provided with a locking notch 34 adjacent the shoulder 33 for receiving a pin 35 carried by the pinion to lock the pinion against operation. When the pinion is turned to carry the pin 35 into register with the notch 34, the spring 29 acts automatically to thrust the pinion axially and thereby to snap the pin 35 into locked engagement with the notch 34. When the key is inserted, however, it may be pressed in to move the pinion axially a suflicient distance to cause the pin 35 to clear the notch 34, and the pinion may then be operated to move the spring I8 toward the fulcrum of lever I9.

'Statutes and ordinances in various jurisdictions specify` maximum-limits of resistance to collapsing of the door leaves which may Ynot be exceeded. These limits vary, however, for different jurisdictions, so that it is desirable to provide a construction in which the maximum resistance to collapsing may be adjusted to any one of a series of predetermined values. This is accomplished in a very simple and effective manner in accordance with this invention, byprovlding a series of screw holes in the plate 9 (with corresponding openings in the cover plate which overlies the plate 9) so that the screws V32 may be inserted in any selected pair of diametrically opposed screw holes. The selection of the screw holes determines the position of the stop shoulder 33, and hence the Vmaximum or normal pressure whichthe spring I8 may apply to the slide I2.

The door leaves are desirably connected when in Vnormal positions by chains 40, each chain being connected -at one of its ends to one of two adjacent door leaves throughl an end Vblock 43. The end block 43 has recesses 44 and 45 formed in the oppositefaces thereof, the recesses `forming a waistv portion of the block which isreceived between ears 46'and 4l whichform parts, respectively, of a rocker 48 and a latch 49. Y The latch 49 is pivotally mounted upon a vertical pin 50 and is yieldingly urgedA in a clockwisedirection (as seen in Fig. 10) by a compression spring 5I. VThe, spring-5I is interposed between a boss 52'forming part of a stationary plate 53 and an ear 54 formed on the latch. Screws 55 and 56 are-threaded-through the boss 52 and the ear 54, respectively, and have their ends received within the end turns of the spring 5I to hold the spring in place. The latch is provided with a handle portion 5l which projects outward' a short distance beyond the face of the door through a slot 58 and normally bears against theend 'of the slot. When it is desired to release the chain manually the trigger is engaged by a finger of the operator and moved counterclockwise to a position clear'of the recess 45; When this is done the chain can be readily-withdrawn or may drop from the Ydoor leaf. under the influence of its own weight.

The latch, however,'cannot be 4turned counterclockwise from its normal position, and hence Frelease of the chain, in response Vto separating force exerted upon the connected leaves, can only result in a release of the chain through a'displacement of the rocker 48.` I

The rocker 48 is pivotally mounted upon a vertical pin 59 and is :normally held in engagement with a plate 6l) by a compression spring 6| L The spring 6l encircles the shank of a screw S2 which is threaded through a nut 63 and which bears at its end remote from the head against .a plate 64. The lower face of the head of the screw 32 engages the rocker 48. The nut 63 has a flat side disposed in engagement with a shoulder and is prevented from turning by said shoulder. The head of the screw 52 has a rim portion Se which is received in an undercut recess S1 formed in the plate 68. Since the screw is just long enough to engage the opposite plate 641 when its rim 6B engages the wall of the re- .cess .61, it is not possible to turn the screw accidentallyV completely out of the nut 63, and hence the operative relation of the parts cannot be accidentally or maliciously disturbed. Rotation of the screw 62 is effective to move the nut t3 longitudinally of the screw, and hence to increase or diminish the spring pressure which must be overcome in order to free the block i3 by displacement of the rocker 48 from normal position.

Each chain is secured at its opposite end to an adjacent door leaf through an end link 68 which extends into the leaf through slots formed in successive plate or block members Sli, 69, it and 7l. The plate 'il is serrated and interts with the serrated face of a block T2 located within .the door. The end link E38 ts into and extends through a boss 'E3 formed on the block 12. A coiled spring 'id is received in a bore l5 formed on the block l2. A coiled spring M is received in a bore 'l5 formed in the boss 'i3 and bears against the base of the bore outside the bounds of the end link 88. A circular nut 'i6 is threaded onto the end of the link til and bears against the spring l, being itself of small enough diameter to be received in the bore l5. The spring 14 provides a certain amount of yielding for the chain, and at the same time prevents the occurrence of objectionable slack.

Provision is made for adjusting the block 'l2 relative to the plate l! and fo-r locking it in adjusted position from the exterior of the door leaf. A screw ll, having a collar portion i8 disposed against the inner face of the plate 64, has a threaded shank I9 which extends through an elongated slo-t 89 in the block f2, and a reduced end portion 3i which has bearing in a bore 82 of the block 53. A nut 83 is threaded on the shank 'i9 of the screw and has flat sides which fit between the walls o1 the slot 8B. 'I'ne nut 83 also has wings or ears Sli which overlie the block 'l2 and extend outward beyond the sides -of the slot 85. The screw is normally turned to draw :the ears Sli rmly against the block 'l2 to hold the block i2 clamped in interlocking relation with the plate li. When it is desired to adjust the blcok 'i2 to a different position, the screw 'il is turned in a direction to back the nut 83 away from the block l2. This leaves the block 'l2 free to be readjusted and it may be moved to the new desired position by seizing and moving the end link 68 through which the chain is connected to the block. The block l2 may then be locked in its new position by turning the screw 'l1 in a direction to draw the nut 83 toward the head of the screw so as to cause the ears 8l to clamp the block 'i2 against the plate 1l.

vVhile we have illustrated and described in detail certain preferred forms of our invention, it is to be understood that changes may be made therein and the invention embodied in other structures. We do not, therefore, desire to limit ourselves to the specific constructions illustrated,

but intend to cover our invention broadly in whatever form its principle may be utilized.

We claim:

l. In a revolving door, the combination with a central .rotary support and leaves collapsibly mounted thereon, of a detent carried by each leaf, means for yieldingly applying holding pressure to each detent to hold the leaf yieldingly in normal position, sai-d pressure applying means being operable between effective and relatively ineffective positions, an operating device for the pressure applying means and means automatically locking the -operating device against undesired operation.

2. In a revolving door, the combination with a central rotary suport and leaves collapsibly mounted thereon, of a detent carrie-d by each leaf, means for yieldingly applying holding pressure to each detent to hold the leaf yieldingly in normal position, said pressure applying means being operable between effective and relatively ineffective positions, an operating device for the pressure applying means an-d means for latching the operating device to cause it positively to retain the pressure applying means in effective position.

3. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of a detent carried by each leaf, means for yieldingly applying holding pressure to each detent to hold the leaf yieldingly lin normal position, said pressure applying means being operable between effective and ineffective positions, an .operating device for the pressure applying means and means for latching the operating device to cause it to retain the pressure applying means in effective position comprising a rotatable and axially movable pinion, a projection carried by the pinion, a notched member alongside the pinion and a spring automatically effective when the projection is aligned with the notch to move the pinion axially to engage the projection in the notch.

4. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of a detent carried by each leaf, means for yieldingly applying holding pressure to each detent to hold the leaf yieldingly in normal position, said pressure applying means being operable between effective and ineffective positions, an op-erating device for the pressure applying means and means for latching the operating device to cause it to retain the pressure applying means in effective position, comprising a rotatable and axially movable pinion, a locking member alongside the pinion, said pinion an-d locking member having interrlitting latching portions and a spring automatically eective when the intertting portions are aligned by rotation of the pinion to move the pinion axially to snap saidportions into intertting engagement.

5. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of a detent carried by each leaf, means for yieldingly applying holding pressure to each detent to hold the leaf yieldingly in normal position, said pressure applying means being operable between effective and ineffective positions, an operating device for the pressure applying means and means for latching the operating device to cause it to retain the pressure applying means in eiective position comprising a rotatable and axially movable pinion, a locking member alongside the pinion, said pinion and locking member having intertting latching p0rtions and a spring automatically effective when the intertting' portions are aligned by rotation of the pinion to move the pinion axially to snap said portions into interfltting engagement, said lockingmember being mounted co-axially with the pinion, and means for facilitating the mounting of the locking member in different angular positions about the pinion axes. Y

6. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of a detent carried by each leaf, means for yieldingly applying holding pressure to each detent to hold the leaf yieldingly in normal position, said pressure applying means being operable between effective and ineffective positions, an operating device for the pressure applying means and means for latching the operating device to'cause it to retain the pressure applying means in effective position comprising a rotatable f and axially movable pinion, a locking member alongside the pinion, said pinion and locking member having intertting latching portions and aspring automatically effective when the intertting portions are aligned by rotation of the pinion to move the pinion axially to snap said portions into intertting engagement, said pinion'having a hub portion journaled in the locking member and provided with a key socket which is exposed through the locking member, whereby the pinion may be first moved axially by key pressure to unlock it and then turned by rotation of the key.

7. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of chains connecting adjacent leaves, and means connecting a chain to a leaf comprising an end block onA the chain, a rocker normally intertted .with the end block, and holding the same against release, a spring urging the rocker to normal locking position, a stationary abutment Within the leaf for sustaining the spring, means extending transversely of the leaf and operable from the exterior of the leaf to adjust the abutment toward and from the normal position of the rocker to change the force required to be overcome in order to release the chain, and means preventing removal of the adjusting means from the leaf.

8. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of chains connecting the adjacent leaves and means connecting a chain to a leaf comprising an adjustable anchor block Within the leaf, a supporting plate for the anchor block and a clamp operable from the exterior of the leaf to clamp the anchor block to the supporting plate and release the same at will.

9. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of chains connecting the adjacent leaves and means connecting a chain to a leaf comprising an adjustable anchor block Within the leaf, a supporting plate for the anchor block, a clamp for holding the anchor Vblock to the supporting plate comprising a screw passed through the block and plate and a nut threaded on the screw, said anchor block having a slot in which the nut is partially received and said nut having flat sides for engaging the walls of the slot and clamping wings extending outward beyond the bounds of the slot.

10. A structure as set forth in claim` 9 wherein the anchor block and the supporting plate have complimentary serrated faces.

11. A structure as set forth in claim 9 wherein provision is made of means for permanently restraining the screw against endwise movement.

12. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of chains connecting the adjacent leaves and means connecting Ya chain to a leaf comprising an adjustable anchor block Within the leaf, a supporting plate for the anchor block, said anchor block having a bore therethrough and said chain having an end link fitting in said bore.

13. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of chains connecting the adjacent leaves and means connecting a chain to a leaf comprising an adjustble anchor block within the leaf, a supporting plate for the anchor block, said anchor block having a bore therethrough and said chain having an end link fitting in said bore, a spring surrounding the end link and bearing against said anchor block and a nut on the end link for engaging the spring in opposition to the anchor block.

14. In a revolving door, the combination with a central rotary support and leaves collapsibly mounted thereon, of chains connecting adjacent leaves, and means connecting a chain to a leaf, comprising an end block on the chain, a rocker normally intertted with the end block and holding the same against release, a spring urging the rocker to normal locking position, a stationary abutment within the leaf for sustaining the spring, and means operable from the exterior of the vleaf to adjust the abutment toward and from Vthe normal position of the rocker to change the force required to be overcome in order to release the same, the abutment consisting of a nut held against rotation and the abutment adjusting means consisting of a screw threaded through the nut.

15. A structure as set forth in claim 14 wherein provision is made of means engaging the screw at opposite ends to hold it against endwise movement and to prevent its being turned with the nut.

EDMUND PEREMI. CHARLES KISH. 

